Okay so, you know how you can go to limewire - prefrences - itunes - sharing and then have it so you have a shared folder in itunes?

Well, when I select this option a shared folder opens on itunes but if I click on it, It'll act as if it's connecting then an error message will pop up saying "The shared library "[library name here]" is not responding. (-3259) Check that any firewall software running on either the shared computer or this computer has been set to allow communication on port 5215."

So what do I do?